Tool for operating upon chairs.



No. 765,613. PATBNTED JULY 19, 1904.

- G. DILLMAN.

TOOL FOR OPERATING UPON CHAIRS.

APPLICATION nun 0OT.19, 1901.

N0 MODEL. 7 2 SHEETS-SHEET '1.

ciwoig i VENTok. QM @hawwam WITNESSES w? I A TTORNE V No 765,613. OPATENTED JULY 19,1904.

. G. DILLMAN. I

TOOL FOR OPERATING UPON CHAIRS.

APPLICATION ,IILED'OOT. 19, 1901. no MODEL. 2 SHEETS-SHEET 2.

i f f www tom of wood or of similar material.

Patented July 19, 1904.

PATENT OFFICE.

GEORGE DILLMAN, OF VVILLIAMSBURG, OHIO.

TOOL FOR OPERATING UPON CHAIRS.

SPECIFICATION forming part of Letters Patent No. 765,613, dated July 19,1904.

Application filed October 19, 1901. Serial No. 79,222. (No model.)

To all whovn it may concern.-

Be it known that I, GEORGE DILLMAN, a citizen of the United States, anda resident of the town of Williamsburg, in the county of Clermont andState of Ohio,'have invented certain new and useful Improvements inTools for Operating upon Chairs which are toReceive Bottoms of CertainKinds, as .hereinafter described, of which the following is aspecification.

The object of my invention is to produce mechanism which will rapidlyand accurately prepare that part of the chair-bottom which is to beprovided with a supplemental bottom of wood or similar material or ofcane.

The several features of my invention and the various advantagesresulting from their use conjointly or otherwise will be apparent fromthe following description and claims.

In the accompanying drawings, making a part of this application, and inwhich similar letters of reference indicate corresponding parts, Figure1, Sheet 1, is a view in perspective of a machine and my tubularmechanism for operating upon the chair-bottom framepiece for thereception of a supplemental bot- Fig. 2, same sheet, is a view,enlarged, in perspective of thetubular tool shown in Fig. 1. Fig. 3,

same sheet, illustrates'in elevation the adjunct cutter for use inconnection with the tubular saw. Fig. 4, Sheet 2, illustrates inperspective the same tubular saw when provided with additional adjunctsand all adjuncts arranged to form the annular recess R shown in Fig. 11.Fig. 5, Sheet 2, is an elevation of the additional adjunct cuttingdevice carried by the tubular saw. Fig. 6, Sheet 2, represents an edgeelevation of one of the cutting-tools, having an inclined blade to makean inclined or beveled cut, as hereinafter specified. Fig. 7, Sheet 2,is aside elevation of the same. Fig. '8, Sheet 2, represents an edgeelevation of one of the cutting-tools whose blade is adapted to make acut at right angles to the cut made by the adjunct cutting device shownin Fig. 5. Fig. 9 represents a sideelevation of the tool shown in Fig.8. FigxlO is a vertical crosssection of a portion of a chair-bottomafter the latter has been operated upon by my invention in preparationfor receiving the cane bottom and showing the result of the work of mytool. Fig. 11 is a vertical cross-section of a portion of a supplementalchair-bottom after the latter has been operated upon by my invention,the part being shown as ready to receive a supplemental bottom ofleather or other desirable material. showing the relative constructionof the shaft S, the gear by which it is rotated, and the hearing whichsupports the gear. In this view the bearing and the gear are in sectionand the shaft is left in elevation. Fig. 13 represents a transversesection of the shaft S, taken at anypoint along its length.

I will now proceed to describe my invention in detail. The machine whichis to operate my invention may be of any operative kind or type. It mustprovide a suitable support or rest for that portion of the chair whichis to be cut out and which is to receive the supplemental bottom. Itmust have means for sustaining the tubular saw, with its adjuncts, andfor reciprocating that saw to and from said chair-frame to be worked andfor rotating the tubular saw and its adjuncts. One kind of such machineis shown, and, briefly described, is as follows:

A is the supporting-frame of the machine.

B is a rest or support for the chair framepiece to be worked and has acentral opening B large enough to permit the tubular saw while cuttingthrough the frame-piece to pass down through, so as not to out thesupport.

O indicates the tubular saw supported by and fixed on a shaft S,rotatable in bearings T T, respectively supported on bracket-piecesMeans for rotating the shaft S consist of the bevel-gear V on shaft Sand bevelgear W on shaft W supported in bearings being a loose pulley. Alever X, pivotally Fig. 12 is a section fulcrumed at X is pivotallyconnected to the upper end of the shaft S at X The end X of the lever Xcarries a weight X to balance the weight of the saw O and shaft S. Theshaft S being duly rotated in turn duly rotates the tubular saw 0.Elevation or depression of lever X at its handle operates to move up ordown the shaft S and the saw O.

9 W W and operated by the pulley WW, W

The hollow shaft V of the bevel-gear V rotates in the box or bearing Tin the adjacent bracket T. This hollow shaft has a vertical groove Vlocated adjacent to the central aperture V* through this gear V. Theshaft S carries a feather or spline S entering such vertical groove VThus the shaft S is free to be moved vertically, and yet is at all timescompelled to rotate with the gear V as the latter revolves.

Having described one kind of means which can be used to operate myinvention, I will noiv proceed to describe my invention in detai Thetubular saw C carries teeth D upon its edge, formed suitably to operatein connec tion with the circular motion of the saw. I have found byexperimentation that such a saw when the teeth are continuous clogs, be-

cause there is no means of getting rid of the sawdust. To obviate thisimpediment, I place inclined slots D at intervals in the line of theteeth, thus interrupting the teeth at intervals. These slots D areplaces where the sawdust can gather and get out of the way of the teeth,thus leaving the latter free to act di-' saw-cut made by the saw-teeth Esuch dis' tance being measured radially from the axis of the saw-barrel.Each of these ad junctsaws E is held in place upon its bed F by means ofbolts or screws E E passing through the plate E of the saw and into thebed F.

I find it desirable to give the saw E a capacity for adjustment towardthe saw-teeth D and away from them. This I do by means of slots. To thisend I make the openings E E in the plate of the saw E through which thebolts E and E respectively, pass in the form of slots, as shown.

In connection with the adjunct saw E is a wood-separating device, whoseblade G is mounted on a suitable plate G secured by bolts G G throughopenings Gr G to the barrel C of the saw C. These bolts are relativelylocated so as to best brace the plate G and its cutting-tool G againstdisplacement. The openings Gr are of a slotted form to allow of theadjustment of the tool Gr nearer to or farther from the cutting edge Dof the tubular saw.

As there are preferably two adjunct saws E E so there are alsopreferably two cutting-tools G, respectively located on opposite sidesof the tubular saw.

The mode in which this combined tool is commonly this outer portion ofthe chairbottom is made of several pieces, and these are duly andstrongly united. This outer portion of the chair-bottom I will forconvenience hereinafter term the bottom-frame. This bottom-frame M musthave a circular opening P out through it. It must also have an annularrecess R extending from this opening back a desirable distancesufficient to receive the leather or like central (supplemental) bottomand to afford a place where .such leather bottom can be fastened inplace. In Fig. 11 this latter bottom L is shown in dotted lines. Ineffecting this shaping of the bottom frame the rotating tubular saw ismoved down and its teeth D cut whatever of the central portion of theframe M is present and leave the hole P. The edge P is formed by the sawD thus descending and cutting the wood. The rotating saw-cylindercontinues to descend, and the teeth E of the adjunct saws cut into thebottom-frame at the line R and out there an annular groove. Meanwhilethe separating knives or cutter G shave down and off the wood R (seeFig. 10) lying between the-edge P and the groove R to a horizontal planeeven with the bottom of the groove R provided with the recess R andwith'the opening P and is in readiness to receive the central bottom.

For shaping the chair-bottom for the application of the supplemental(central) cane or similar bottom the tubular saw receives, preferably,an additional set of adjunctsaW-teeth. The saw D is duly employed toform the hole P and the adjunct teeth E to cut an annular groove at R Asecond set of .adjunct teeth are employed to cut the groove at R .wider.Hence this second set of adjunct teeth E are set upon a bed F and arepreferably connected in the same adjustable manner as the adjunct teethE are to the bed; but they are set farther from the barrel or cylinder GAs the result,

they cut out the wood at R alongside of the groove R made by theteeth E,and thus make the groove of a desirable width to receive a spline. It isto be understood that the supplemental cane or like seat is laid overthe opening P and its edge portion liesover thegrooveR R A spline isthen laid upon the supplemental seat and above the groove and presseddown forcibly, carrying the cane into the groove, the spline being nowwedged in the groove. When the annular corner at M is left sharp, itwill when the cane is pressed down by a person sitting thereon operateto cut the cane at this point muchsooner than it otherwise would. Toobviate this I use on the tubular saw acutter G substantially the sameas the cutter G The bottom-frame is now and secured to the tubularsaw-barrel in substantially the same way, with the exception that theblade of the cutter is somewhat inclined and is set nearer to the planeof the saw G. Then while the tubular saw is rotating and the teethE Eare forming the groove R R the cutter G shaves off the corner at Mleaving it beveled, so that it is no longer sharp and cannot injure thecane.

Among the advantages to be derived from my invention are the following:The central aperture in the seat is cut at substantially the same timeas is the'recess or annular channel which surrounds the central apertureand which is the means whereby the central or supplemental seat issupported.

The entire operation is performed with great accuracy and celerity, andtheresultant product is ready for immediate usethat is to say, is readyfor the application of the leather or cane, &c., seat thereto and forthe final attachment'of the same to the seat.

What I claim as new and of my invention, and desire to secure by LettersPatent, is-

1. The combination of the barrel having teeth on its edge, and offsetson the barrel carrying a cutting device for cutting an annular groove orkerf other than that cut by the edge teeth, and a knife or cutter foroperating at the edge of the material where the edge teeth operate,substantially as and for the purposes specified.

2. The combination of the barrel C provided at its edge with saw-teethD, teeth E, ofiset on the barrel carrying the teeth E, and the knife orcutter G, carried by the barrel, sulstantially as and for the purposesspecifie 3. A tool consisting of the barrel C teethD thereon, teeth Eofiiset from the barrel, teeth E staggered relatively to teeth E,substantially as shown, and offset supporting knife or cutter, at theside of the barrel, substantially as and for the purposes specified.

4. The combination of the barrel 0 provided at its edge with saw-teethD, teeth E, ofiset on the barrel carrying the teeth E and the knife orcutter G, inclined to the peripheral plane of the cut made by thesaw-teeth D, dsubstantially as and for the purposes specifie 5. Incombination, the barrel having edge teeth 1), and the cutting means E, Eand E E the shanks E of these parts having slots, offsets on the barrelon which these means are located, and other cutting means as G, G, whoseshanks are duly slotted, and screws, or the like through the slots, forconnecting such means to the barrel, substantially as andfor thepurposes specified.

GEORGE DILLMAN.

Attest:

. HATTIE DAVIDSON, E. W. MCMILLEN.

